Rivetless sickle for mowers, &amp;c.



J. A. LAGKEY. RIVBTLESS SIGKLE FOR MOWERS, dw.

APPLIQATION FILED MAILZl, 1913.

Patented Oct. 28, 1913.

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JAMES A. LACJEHJY, F ONTARO, OREGON.

RIVETLESS SIOIKLE FOR MOWERS, &o.

aofi/asse.

' on, which form a part of this specification.

rlhis invention relates to new and uselul improvements 1n rivetless slckles for mowers, harvesters, etc., and the object in view is to produce a simple and etlicient device of this nature so constructed that the cut-` ter sections may be held securely in place upon the sickle bar without the use of bolts, rivets, etc., and adapted to be easily and quickly removed from recesses formed in the bar.

rlhe invention comprises various details of construction and combinations and ar# rangements of parts which will be herein# after fully described, shown in the accompanying drawings and then specifically de,- fined in the appended claims.

My invention is illustrated in the accompanying drawings, in which Figure 1 is a plan view of a cutter bar, a portion being broken away to better illustrate my invention. 2 is an edge view. llig. 3 is a sectional view on line 3--3 of Fig. 1. Fig. 4 is a section on line a-fl of Fig. 1, and Fig. 5 is a detail perspective of one of the sections.

. Reference now being had to the details of the drawings by letter, A designates a sickle bar which is adapted to be recipro cated in any suitable manner. One tace of said bars is provided with a series of recesses B, the opposite inclined walls B of which are undercut` and at inclinations transversely to each other and the under edge of the integral projections C intermediate the recesses are also undercut, as shown at D. The cutter sections, designated by letter E, have shank portions E, the opposite edges of which taper toward each other and are beveled adapted to engage the undercut Walls ld ol the recesses, while the shouldered portions of the sections are beve eled as at E2 and are adapted to engage the Specification of Letters Patent.

Application filed March 21, 1913.

Patented (let. 2d, 1913.

serial no. 755,253.

sev

wall l inclined as shown and its inner wall flush with the edge oiE the bar when the section is adjusted in place within the recess.

A locking bar, designated by letter ll, has a. play upon the edge of the bar A, being limited in its movements by means oit the pins U and P, which project trom the edge of the bar A and pass through the elongated slots L. Said locking bar is provided with a series of locking projections or lugs Q; upon one edge thereof, each having an inclined or wedge-shaped end Q adapted. to contorni to and engage a notch H in one of said sections, the inclined end tu of the lug being designed to have a wedging action against the inclined wall l of the notch to cause the section to be drawn up snugly into the recess provided for it and draw `the beveled edges of the shank and shoulders of the section against the corresponding undercut edges or walls of the recesses and the bottoms ot the sections intermediate the reeesses. Each end of the projection Q, is beveled away as at lt as shown and providing a plow for the purpose of cleaning out any `foreign matter which might accumulate in the space between the end of the lug and the adjacent edge of the shank portion of a section when the bar is moved in one direction in order to release the latter.

ln order to hold the locking bar in engagement with the shank portion oli the cutter sections, a resilient hook W is provided which is fastened at `W to one edge ot' the cutter bar, preferably in a longitudinal groove V formed therein, while the angled end of the hook extends through an aperture Y and engages a shoulder S formed in the edge of the locking bar. The edge of the cutter bar A is recessed at A in order to allow for convenient access to the resilient hook when desired to withdraw the same trom engagement with the locking bar.

By the provision of a section retaining and releasing device embodying the features of my invention, it will be noted that the latter, being provided with beveled shoulders and shank portions to conform to the undercut end walls of the recesses and the under edges of the projections intermediate the recesses, will be drawn by the wedging action of the lugs upon the releasing bar snugly against said undercut edges and will be held snugly in place without the use of bolts, rivets or other fastening devices.

Then the various sections are all engagedsimultaneously with the inclined or wedging edges of the lugs, the resilient hook will hold the locking bar in its engaging relation, thus insuring the secure fastening of all of the sections. In the event of it being desired to remove the sections, it may be easily and quickly done by first withdrawing the resilient hook from engagement with the shoulder of the releasing bar, imparting a longitudinal movement to the latter, after which, by tapping the rear end of each section, it may be released from the recess readily by reason of the longitudinally inclined beveled edges of the shank portions of the sections.

Wlhat I claim to be new is l. A rivetless sickle comprising a cutter bar having a series of recesses formed in the face thereof, the end walls of said recesses being undercut and transversely inclined, the projecting portion of the bar intermediate the recesses having undercut edges, cutter sections having shank portions which taper toward each other and are beveled, each cutter section having beveled shoulders at the inner ends of the tapering edges adapted to engage respectively the undercut edges of said projections, the shank portion of each of said sections having a notch with an inclined wall, a longitudinally-movable locking member having lateral projections with wedgeshap'ed ends adapted to engage the inclined walls of the notches and Vhold Uopies of this patent may be btaned for tive cents each, by addressing the Gommissio'ner f Washington, D. C.

the sections in place, a resilient hook fastened at one .end to said bar and adapted to engage Vsaid member to hold the same locked, as set forth.

2. A rivetless sickle comprising a cutter bar having a series of recesses formed in the face thereof, the walls of said recesses being undercut and transversely inclined, the projecting portion of the bar intermediate the recesses having undercut edges, cutter se'ctions having shank portions having edges tapering toward each other and beveled, each section provided with beveled shoulders, said tapering edges and shoulders adapted to engage respectively the undercut edges of said projections, the shank portions of each of said sections having a notch with an inclined wall, a longitudinally movable locking member having lateral projections with wedge shaped ends adapted to engage the inclined walls lof the notches and hold the sections in place, the forward edge of ysaid bar having a groove therein with an aperture leading from one end of the groove through said bar, a resilient hook having a shank portion mounted in said groove and one end fixed to the bar with its hooked end extending through said aperture and adapted to engage a shoulder vupon said. locking member, to hold same from longitw dinal movement in one direction, as set forth.

In testimony whereof I hereunto aiiix I'ny signature in the presence of two witnesses.:

JAMES A. LACKEY.

Witnesses:

JOHN W. McCULLocH, RALPH W. ECKHARD'I".

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